.guide {
    margin: 30px auto;
    width: 100%;
    height: 40px;
    background-color: #1b5cac;
    margin-bottom: 0px;
}

.guide ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

.guide ul li {
    text-align: center;
    width: 160px;
    float: left;
    height: 40px;
}

.guide ul li a {
    text-decoration: none;
    color: white;
    font-size: 20px;
    line-height: 40px;
}

.guide ul li:hover {
    background-color: rgb(17, 99, 171);
}